Infinity Cannon

The Infinity Cannon is an Eridian WMD that was capable of causing mass devastation to whole sectors of the Hathusis Galaxy at only half power, and could destroy it completely if at full capacity. It was originally created by the Eridians after they faced foes like the Destroyer and the Dreamer and imprisoned them in Vaults, if the latter were ever to escape and threaten them with extinction.

The Infinity Cannon harnessed Eridium as a power source, using the storage function of violet Infinite energy and converted it into more destructive forms, such as blue Infinite energy. This blue Infinite energy caused celestial bodies in a designated area to immediately supernova, engulfing their orbiting planets and destroying them. This was because it disrupted the stars' nuclear fusion processes, depleting their hydrogen supply a millionfold.

Functions
The Infinity Cannon was a weapon only meant to be used in the absolute worst case scenario, in the same vein of the Warrior. It is unknown if it was used during the extinction event that caused the Eridians to flee into the Infinite, however it is unlikely as the Warrior was not used either, so it is possible the threat they faced could not be solved by shooting at it.

The Infinity Cannon could do more than cause hypernovas. It could be targeted on a particular planet, or specified set of planets, and obliterate them and fragmenting them in an instant. This is what happened to Athenas and Darios, along with multiple other planets where Associated Constellations held their managerial committee. The Infinity Cannon could also increase gravity in the centre of stars and planets, until they ultimately collapsed under their own force and became black holes. Samael McCain threatened to do this to the Garn Belt, unless Matt gave himself in.

Rediscovery
Thousands of years after its creation, the Infinity Cannon was found on Divaloca by Samael McCain, director of the Gemini Corporation, who felt an 'instinct' drawing him towards it. Needing Eridium to power it, he ran a test run with the reserves of Infinite energy remaining inside it, specifically targeting planets that he knew held conferences for the Associated Constellations, such as Darios and Athenas. McCain then used the last of the Eridium that both Gemini and Hyperion had collected over the years to obliterate the Metraxian sector of the galaxy.

With none left, Samael embarked on a mission to find enough Eridium to power it, however Eridium became exceedingly expensive once Hyperion lost their control over Pandora. This was because all the other corporations had already intervened and profited off the Eridium. With other corporations having taken most of the pure refined Eridium, Samael spent a long time finding more, including searching the Skhedeli sector that the Gemini once took over.

His prayers were answered when Matt's reopening of the Vault of the Dreamer once caused more Infinite energy to flow back into the world, which McCain quickly directed into empty shells of Eridium.